Use this to see exactly which "hop" in your connection is causing lag.
They find the most direct path to the game server, often shaving 10-20ms off your ping. 3. Ethernet over Wi-Fi Rule: Never game on Wi-Fi if you want 0-15ms ping. The Fix: Use a Cat6 or Cat7 Ethernet cable.
Reduces stutter by clearing memory standby lists.
Pros often use "GPNs" (Gamers Private Networks).